Lamp and envelope combination



Nov. 17, 1970 J. SPITERI LAMP AND ENVELOPE COMBINATION Filed June :3, 1968 FIG.2

INVENTOR. JOSEPH SPITER I United States Patent Olfice US. Cl. 313-318 2 Claims ABSTRACT OF THE DISCLOSURE The invention disclosed is an incandescent lamp having a sealed transparent envelope having a filament in it. A bulb rib support which has a hollow cylindrical intermediate part having a radially outwardly extending flange on a first end, received in a cup-shaped lens which has its open end sealed to the outer periphery of the flange. The closed end of the flange has a convex outer surface. A threaded shell is fixed to the outside of the rib sup port. The end of the rib support remote from the flange is closed and has an electrical terminal on it. The filament is connected between the shell and the terminal. Three circumferentially spaced axial ribs are integrally formed on the inside surface of the hollow cylinder and concave seat is formed on the end of the cylindrical body and on the end of the ribs next to the flanges. The envelope is fixed to the seat. The envelope is transparent and so is the lens.

It is, accordingly, an object of the invention to provide an improved lamp. 1

Another object of the invention is to provide an improved combination lamp and enclosure.

Another object of the invention is to provide a combination lamp and enclosure which is simple in construction, economical to manufacture, and simple and eflicient to use.

With the above and other objects in view, the present invention consists of the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportions, and minor details of construction without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings:

FIG. 1 is an isometric view of the lamp according to the invention;

FIG. 2 is a longitudinal cross sectional view taken on line 2-2 of FIG. 1; and

FIG. 3 is a top view of the lamp with the lens removed.

Now with more particular reference to the drawing, the lamp is generally indicated at and it is made up of a transparent envelope which may be generally spherical in shape indicated at 17. The envelope is hermetically sealed and has a filament 23 in it which is of the usual coiled kind and extends out through the generally conical hermetically sealed end 24 of the envelope and has two terminals 18 and 19 connected to the respective ends of the filament 23. The rib support 11 may be made of an electrical insulating material and may be nontransparent. It has the intermediate hollow cylindrical portion 25 which receives the conical end 24 of the envelope. The intermediate hollow cylindrical portion has the outwardly directed flange which is made up of a stepped part and a radially outwardly directed part 14. The parts 14 and 15 may be considered to be a single radially outwardly directed flange.

The hollow cylindrical member has the closed end that is in the form of a cup having cylindrical walls 21 integrally connected to the cylindrical part and a closed end Patented Nov. 17, 1970 integrally connected to the cylindrical part. The closed end 20 has a hole in it that receives the eyelet 16 which is made of an electrical conductive material. The inner periphery of the cylindrical part has the spaced axially extending ribs 30 which are spaced degrees apart and a concave seating surface is formed on the ends of the ribs and on the end of the hollow cylindrical part adjacent the flange. A resilient material in the form of a resilient strip of heat and shock resistant material indicated at 27 which may be an asbestos material or the like and may be supported between the concave surface and the envelope. The material may be considered to be an adhesive material of suitable properties to seal the hot glass envelope to the rib support.

The screw shell 13 is received on the outer periphery of the cylindrical part 25 and the end of the screw shell remote from the flange has an inwardly directed flange that rests under the end of the cylindrical member. Spaced ribs 30 extend in from the inner periphery of cylindrical part 25. The screw shell may be suitably fixed to the rib support 11 by suitable adhesive material or otherwise in accordance with good mechanical practice.

A hole is formed in the rib support 11 as indicated through which the terminal 18 extends and the end of the terminal 18 is electrically fixed to the screw shell. The terminal 19 is electrically fixed to the eyelet 16.

The cup-shaped lens 12 has an intermediate cylindrical part 22 that receives the flange 14 and is fixed to it by a cohering material suitable to the properties of the materials involved. The lens 12 is made of a transparent material and has a concave end as indicated.

When the rib support 11 has its inner periphery cemented or otherwise fixed to the flange 14 and the envelope 17 is suitably fixed in the end of the rib support 11 as shown and the terminals electrically connected, it will be seen that the lamp shown can be inserted in a suitable lamp socket by screwing it into the lamp socket.

The foregoing specification sets forth the invention in its preferred practical forms but the structure shown is capable of modification within a range of equivalents without departing from the invention which is to be understood is broadly novel as is commensurate with the appended claims.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A lamp comprising an enclosed transparent envelope having a filament hermetically sealed therein,

said filament being adapted to become incandescent,

a bulb rib support,

said rib support having an intermediate hollow cylindrical part,

and having a first end and a second end,

said first end of said rib support terminating in a radially extending flange,

a generally cup-shaped lens having a closed end and an open end and made of transparent material, said flange having its outer periphery fixed to the inside surface of said cup-shaped lens,

the end of said cylindrical body remote from said flange having means closing it,

said closing means being made of electrically nonconductive material,

an electrically conductive terminal member on the outside surface of said closing means,

a threaded shell received on the outside surface of said cylindrical rib support,

said threaded shell being adapted to be screwed into an electrical socket,

said filament being electrically connected to said terminal member and to said shell,

3 4 said cylindrical rib support having a concave seat on 7 References Cited adiacenF said ag f d fi d UNITED STATES PATENTS sa thgrriast g ope resting on sai concave sur ace an xe 1,433,982 10/1922 Cameron 240 2.18 said cylindrical intermediate part of said rib support 1906188 4/1933 Smany 174.5051 X having circnmferentially spaced axially extending 5 3137804 6/1964 Rubens 313-323 X 3,209,138 9/1965 Moore et al 240 -2.18 X

ribs on its inner periphery, said seat being formed on the ends of said ribs and said envelope resting on the ends of said ribs. JAMES LAWRENCE Pnmary Exammer 2. The lamp recited in claim 1 wherein said flange is 10 D. OREILLY, Assistant Examiner made up of a stepped portion attached to the outer periphery of said cylindrical end and a radially outwardly extending disklike portion fixed to the inner periphery 174 5 51; 313 324 of said lens. 

